php PDO实现的事务回滚示例

本文实例讲述了phpPDO实现的事务回滚。分享给大家供大家参考，具体如下：$servername="localhos

本文实例讲述了php PDO实现的事务回滚。分享给大家供大家参考，具体如下：

$servername="localhost";
$username="root";
$password="admin";
$dbname="test";
try{
 $conn=new PDO("mysql:host=$servername;dbname=$dbname",$username,$password);
 $conn->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);
 //开始事务
 $conn->beginTransaction();
 $conn->exec("INSERT INTO `hello`(`firstname`,`lastname`,`email`)VALUES('YE','XIAMING','yexianming@163.com')");
 $conn->exec("INSERT INTO `hello`(`firstname`,`lastname`,`email`)VALUES('YE','CONG','yecong@163.com')");
 $conn->exec("INSERT INTO `hello`(`firstname`,`lastname`,`email`)VALUES('FANG','MENG','fangmeng@168.com')");
 //提交事务
 $conn->commit();
 echo "New records created successfully!";
}catch(PDOException $e){
 //回滚事务
 $conn->rollBack();
 echo $sql."<br>".$e->getMessage();
}
$conn=NULL;